Yoshimura R&D of America, Inc.

RM-Z450 18-26 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler

RM-Z450 18-26 RS-12 Stainless Full Exhaust, w/ Aluminum Muffler - Main image
$557.38 $899 In stock

Category: Signature Series Exhaust System

After over three years in development and testing we are pleased to announce the RS-12 is here! With the help of incredibly talented factory sponsored athletes, technicians, devoted engineers and a will to raise the bar, our RS-12 has now arrived for the 2018-20 Suzuki RM-Z450.

We considered all the details when it came to the RS-12. One look and you can see it's like nothing else on the market. As you get closer you will notice the details in every place on our new dirt bike system, from the matte carbon fiber end cap with decal inlays to the precise machined joints, this system is next level.

  • Developed and tested in the heat of over 24 months of factory level racing
  • Aggressive, intelligently designed, asymmetrical shaped RS-12 profile allows maximized muffler volume that helps manage sound, add power and provide more clearance for tire and brake caliper
  • Improved performance gains, weight reduction and fit when compared to previous generation design
  • Just like the works systems our Factory Racers use, RS-12 systems utilize precision machined joints. Machined joints provide a superior and exacting fit for joints by better securing the seal between two surfaces with a perfect 360 degree contact surface which translates into improved system life, fit and performance
  • Works-look matte carbon fiber end cap with industry leading design and innovation end cap detailing as expected from Yoshimura
  • Carbon end cap covers inner cap mounted design improves durability, and eases servicing as compared to other sandwich mounting designs most commonly found in the industry
  • New patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arresters
  • Tapered muffler body inlet design of RS-12 enables the system to be pushed forward thus helping with weight centralization without sacrificing performance
  • Proudly designed, developed and made in the USA!
  • Yoshimura Full system weight 8.4 lbs. vs Stock Weight 9.5lbs
  • Repack Kits, optional Inserts and Spark Arresters are available for all models

Sound Insert/Spark Arrester Options

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Sound Level

Volume Insert Spark Arrestor Included
INS-30-K Yes
SA-19-K No
SA-20-K No 
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Grace N. ★★★★★

The new RS-12 cone geometry really woke up the mid-range on my 450, and the aluminum muffler saved almost two pounds over my stock setup. I've put about five hours of hard moto on it and the welds still look perfect.

Mia ★★★★★

Took it to the track the day after installing, and that aluminum muffler really trims the weight over the stock setup. The stainless header held its color after a full moto, and the sound is deep but not obnoxious. You can tell the three years of testing paid off, it just feels crisper off the botto

Sofia ★★★★★

The fitment on my 18 RM-Z450 was spot-on, and the stainless headers match the aluminum muffler beautifully. You can tell the three years of testing paid off—the welds are clean and the whole system feels rock-solid.